Difference between control group and experimental group with example
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Design of Experiments > Control Group The control group
(sometimes called a comparison group) is used in an experiment as a way to ensure that your experiment actually works. It’s a way to make sure that the treatment you are giving is causing the experimental results, and not something outside the experiment. An experiment is split into two groups: the experimental
group and the control group. The experimental group is given the experimental treatment and the control group is given either a standard treatment or nothing. For example, let’s say you wanted to know if Gatorade increased athletic performance. Your experimental group would be given the Gatorade and your control group would be given regular water. The conditions must be exactly the same for all members in the experiment. The only difference between members must be the item
or thing you are conducting the experiment to look at. Let’s say you wanted to know if a new fertilizer makes plants grow taller. You must ensure that the lighting, water supply, size of container and other important factors are held constant for every member in every group. The only thing that differs in this case is the type of fertilizer given to the plants. Control groups can be subdivided into the following types (see:
FDA): Which type of control group you use depends largely on what type of patients you are administering a treatment too.
In many cases, it would be unethical to withhold treatment from a control group or provide a placebo. Next: The Placebo Effect. Beyer, W. H. CRC Standard Mathematical Tables, 31st ed. Boca Raton, FL: CRC Press, pp. 536 and 571, 2002.
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Need help with a homework or test question? With Chegg Study, you can get step-by-step solutions to your questions from an expert in the field. Your first 30 minutes with a Chegg tutor is free! Comments? Need to post a correction? Please Contact Us. The main difference between Control Group and Experimental Group is that Control Group is the group that does not receive variables in the experiment and uses for comparison whereas Experimental Group is the group with which we are conducting an experiment. During an experiment, a group that does not receive variables that are to be tested is known as a control group whereas, during an experiment, the group
that receives variables that are to be tested is known as an experimental group. An experiment has only a single control group; on the other hand; an experiment may have more than one experimental group. All the experiments do not have a control group but, the experiments that are with a control group are called controlled experiments conversely, all the experiments have an
experiment group. A control group is also known as a comparison group on the flip side; there is no other name for the experimental group. A control group is a group in which the independent variable is not changing or set as a standard value by the researcher, on the other side, the researcher changes that independent variable in the experimental group that may affect the
dependent variable. A control group is a group that is used to compare the results of the experimental group with natural results of the control group and increases the validity and reliability of the results while the experimental group explains the influence of the independent variable on the dependent variable. If there is no any change in the value of dependent
variables after comparing the results of the experimental group with the natural group then the null hypothesis is accepted on the flip side, if there is a significant change in the dependent variable of the control group and the experimental group then an alternative hypothesis is accepted. A control group is not directly involved in the experiment, but it is only used to compare the natural results with the experimental group, on
the other hand, an experimental group is directly involved in the experiment with specific experimental conditions. Research is an ideal source for scientific investigation. During the research, tests are conducted under controlled conditions to find out the validity of a hypothesis. The different numbers and types of groups are planned according to the topic. Two main types of groups are the control group and the experimental group. The control group is the group that is not directly involved in the experiment
but is used to compare the results with the experimental group. On the other hand, the experimental group is the group in which we are conducting experiment. So, all the experiments do not need a control group, but, all the experiments have an experimental group. A control group is a group in which the independent variable is not changing or set as a standard value by the researcher. On the flip side, the researcher changes that independent variable in the experimental group that may
affect the dependent variable. A control group is exactly identical to the experimental group except for the change in experimental conditions. A control group is a group that is used to compare the results of the experimental group with the natural results of the control group and increases the validity and reliability of the results. On the other side, the experimental group explains the influence of the independent variable on the dependent variable. If there is no any change in the value of dependent variables after comparing the results of the experimental group with the natural group then the null hypothesis is accepted whereas, if there is a significant change in the dependent variable of the control group and the experimental group than an alternative hypothesis is accepted. An experiment has only one control group, but it may have more than one experimental group. All the experiments do not have a control group, but, the experiments that are with a control group are called controlled experiments. What is the Control Group?In an experiment, a control group is a group that does not receive variables that are to be tested. A control group is also known as the comparison group. All the experiments do not have a control group, but, the experiments that are with this group are called controlled experiments. When the experimental conditions are difficult to isolate, control groups are very important. In this type of group, the independent variable is not changing or set as a standard value by the researcher. It is used to compare the results of the experimental group with the natural results of the control group and increases the validity and reliability of the results. If there is no change in the value of dependent variables after comparing the results of the experimental group with the natural group then the null hypothesis is accepted. ExampleAn example of a controlled experiment is such that if anyone wants to know that plants need water to live or not, he will design an experiment. In the experiment, a plant will water, and others will not, to check the necessity of water for its survival. The watered plant will be from the experimental group. On the other side, that one which is not watered is known as the control group. Types
What is the Experimental Group?An experimental group is a group that receives variables that are to be tested. All the experiments have one or more experimental groups. The researcher changes the independent variable in the experimental group that may affect the dependent variable in research. The experimental group explains the influence of the independent variable on the dependent variable. If there is a significant transformation in the dependent variable of the control group and the experimental group, then the alternative hypothesis is accepted. Two points should be kept in mind while setting an experimental group, i.e., the variable that is to be tested should be clearly defined and you should also know the procedure to find the results from the experimental group. There should be a way of making a comparison to measure the results. Results could be obtained by comparing the results of the experimental group with the control group. Only one variable can be find out in an experimental group at a time. Because, if we are taking more then one variable per group, we would not be able to find out which one is responsible for the results. ExampleA person wants to find out that either a popcorn pops better if it is placed in a refrigerator before placing it in the microwave or not. To check this hypothesis, he will placed one bag of popcorns in refrigerator and other in the kitchen cabinet as usual for one night. Next day he will pop both bags in the microwave and compare the results to check the validity of his hypothesis. Here, a bag of popcorns that was placed in the refrigerator is an experimental group, and that one which is placed in a kitchen cabinet is a control group. Conclusion What is the difference between control groups and experimental groups?What is the difference between a control group and an experimental group? An experimental group, also known as a treatment group, receives the treatment whose effect researchers wish to study, whereas a control group does not. They should be identical in all other ways.
What is an example of an experimental group?Example of an Experimental Group
The group of participants listening to no music while studying is the control group and the groups listening to music, whether with or without lyrics, are the two experimental groups.
How do experimental and control group difference explain with the help of an example?Solution. Experimental groups differ from control groups as independent variable manipulation occurs in an experimental group whereas it is absent in a control group. For example, in a study conducted by Latane and Darley, there were two experimental groups and one control group.
What are examples of experimental control?For an example of a control group experiment, a researcher conducting an experiment on the effects of colors in advertising, asked all the participants to come individually to a lab. In this lab, environmental conditions are kept the same all through the research.
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